[Nevstah]

hi guys! my first post to the forum

i've just bought myself a 1990 classic thats been converted to lpg. i know nothing about the conversion, how to set it up etc etc

some things i hope you may be able to help me with...

i've heard some systems automatically adjust the timing depending on the fuel in use.. how do i know if mine does this? and does anyone know what lpg should be timed to on the 3.9?

also, i was told the lpg system needs to be checked/adjusted regularly.. now bearing in mind theres no O2 sensor, so i cant use an AFR gauge.. whats the best way to do this? do i go thru the 'set by ear' routine? will this be good enough to get it running well? or is a exhaust gas analyser more appropriate to fine tune? if so does anyone know what the CO reading should be?

sorry for all the questions but i have to start somewhere!! and i havent seen these questions asked (that i can find!)

one last thing.. air intake.. the inlet opening on the filter housing is mighty small for a 3.9L engine!? much smaller than on my 2.8L bmw.. and more inline with the size of opening on a 1000cc morris i owned many moons ago! should i be looking to improve this?

thanks a lot guys

nev

 

[Nevstah]

hi guys

thanks for all the useful info! i think i'll be occupied at the weekend now!!

heres some pics to help (possibly):
http://www.nevstah.co.uk/lpg/IMG_0151.jpg
http://www.nevstah.co.uk/lpg/IMG_0152.jpg
http://www.nevstah.co.uk/lpg/IMG_0153.jpg
http://www.nevstah.co.uk/lpg/IMG_0154.jpg
http://www.nevstah.co.uk/lpg/IMG_0155.jpg
http://www.nevstah.co.uk/lpg/IMG_0156.jpg

when i got it, i made a note of how many turns from fully in each screw were, so i have a base.

it was smelling terribly of gas from the exhaust, so i tweaked all of them in a bit. it seems to smell less.

it idles ok 95% of the time, sometimes its a bit too low revs, but i dont think thats down to the mixture entirely as its usually ok. it sounds fine at idle and revs ok. but i'm concerned i dont want to be running it lean and looking to cause problems associated with a lean engine in the future!

cheers

nev